Twin Lakes Dam No 1
Key Takeaway
Twin Lakes Dam No 1 is classified as high hazard in Texas. It was completed in 1948 and is 78 years old. Its primary use is recreation. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Height | 21 ft (taller than 38.8% in TX) |
| Dam Length | 730 ft |
| Dam Type | Earth |
| Max Storage | 121 acre-ft |
| Normal Storage | 5 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 2 cfs |
| Year Completed | 1948 (78 years old) |
| NID ID | TX02914 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
GREAT SOUTHERN REALTY COMPANY
Private
Nearby Dams
Mosher Big Lake Dam
Bandera, TX
High Hazard 26 ftMosher Little Lake Dam
Bandera, TX
Significant Hazard 17 ftH and K Lake Dam
Bandera, TX
High Hazard 35 ftPurple Sage Ranch Lake Dam
Bandera, TX
High Hazard 22 ftMontague Lake Dam
Bandera, TX
High Hazard 41 ftYoungblood Lake Dam
Bandera, TX
Low Hazard 27 ftRock Cliff Dam
Bandera, TX
High Hazard 51 ftAlkek Lake No 1 Dam
Bandera, TX
Significant Hazard 36 ftFrequently Asked Questions
What is the hazard classification of Twin Lakes Dam No 1?
Twin Lakes Dam No 1 is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Twin Lakes Dam No 1?
Twin Lakes Dam No 1 is owned by GREAT SOUTHERN REALTY COMPANY (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Twin Lakes Dam No 1 built?
Twin Lakes Dam No 1 was completed in 1948, making it 78 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
What is the primary purpose of Twin Lakes Dam No 1?
Twin Lakes Dam No 1 serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Twin Lakes Dam No 1?
Twin Lakes Dam No 1 has a dam height of 21 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.
When was Twin Lakes Dam No 1 last inspected?
Twin Lakes Dam No 1 was last inspected on January 30, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.